His mother, Ida Rose Warren, was a descendant of Spanish pioneer Jose Maria Claudio Lopez, a soldier at the San Gabriel Mission.

[3] In 1902, Biscailuz met and married Willette Harrison, whose father was a captain at San Quentin State Prison and later the sheriff of Marin County.

Later, Biscailuz was involved in the 1927 manhunt for child kidnapper and murderer William Edward Hickman, and led raids that eventually helped bring an end to the gambling empire of Tony Cornero.

Biscailuz asked a friend, C. N. (Jimmy) James, a pilot of Western Air Express, to fly an open cockpit plane over Long Beach to gather more information.

James was able to determine that the rumors about Catalina and the tidal wave were not true, and that there were only two small fires burning in Long Beach.

Biscailuz revamped the Sheriff Department's aero squadron to include private pilots flying their own planes to assist in aerial searches and rescues.

[4] In an World War II interview, Biscailuz suggested that Mexican and Hispanic criminal activity in the city during wartime was a ploy by Japanese-Americans, who had by then removed to concentration camps, as a form of sabotage, on the basis of race alone.